Stitutes of Wellness, Bethesda, USA) and normalized to -actin24. The uncropped scan of your blot is reported in the Supplementary Fig. 7. Reside animal imaging. Macrophage localization in vivo was obtained by NIR imaging with the fluorescent label macrophage mice by using PhotonImager (Biospace Laboratory, Paris, France)83. Mouse thioglycollate-elicited peritoneal macrophages have been harvested (as much as 250 106 cells per ml) and incubated for 15 min at RT with VivoTrack 680 (PerkinElmer, Inc., Waltham, USA), dissolved in sterile PBS, washed, centrifuged (400 g, 10 min) and diluted to a final concentration of five 106 cells 40 l-1. Retro-orbital vein injection (40 l) of labeled macrophages was performed in pSNLsham C57BL6 mice at day 9 following surgery. Twenty-four h later,NATURE COMMUNICATIONS | eight:| DOI: ten.1038s41467-017-01739-2 | www.nature.comnaturecommunicationsNATURE COMMUNICATIONS | DOI: 10.1038s41467-017-01739-ARTICLE21. Taylor-Clark, T. E., Ghatta, S., Bettner, W. Undem, B. J. Nitrooleic acid, an endogenous solution of nitrative stress, activates nociceptive sensory nerves via the direct activation of TRPA1. Mol. Pharmacol. 75, 82029 (2009). 22. Trevisani, M. et al. 4-Hydroxynonenal, an endogenous aldehyde, causes pain and neurogenic inflammation via activation with the irritant receptor TRPA1. Proc. Natl Acad. Sci. USA 104, 135193524 (2007). 23. Bautista, D. M. et al. TRPA1 mediates the inflammatory actions of 1-(Anilinocarbonyl)proline In Vitro environmental irritants and proalgesic agents. Cell 124, 1269282 (2006). 24. Trevisan, G. et al. Novel therapeutic GS143 In stock technique to stop chemotherapy-induced persistent sensory neuropathy by TRPA1 blockade. Cancer Res. 73, 3120131 (2013). 25. Obata, K. et al. TRPA1 induced in sensory neurons contributes to cold hyperalgesia soon after inflammation and nerve injury. J. Clin. Invest. 115, 2393401 (2005). 26. Katsura, H. et al. Antisense knock down of TRPA1, but not TRPM8, alleviates cold hyperalgesia right after spinal nerve ligation in rats. Exp. Neurol. 200, 11223 (2006). 27. Caspani, O., Zurborg, S., Labuz, D. Heppenstall, P. A. The contribution of TRPM8 and TRPA1 channels to cold allodynia and neuropathic discomfort. PLoS One 4, e7383 (2009). 28. Eid, S. R. et al. HC-030031, a TRPA1 selective antagonist, attenuates inflammatory- and neuropathy-induced mechanical hypersensitivity. Mol. Discomfort 4, 48 (2008). 29. McNamara, C. R. et al. TRPA1 mediates formalin-induced discomfort. Proc. Natl Acad. Sci. USA 104, 135253530 (2007). 30. Trevisan, G. et al. TRPA1 mediates trigeminal neuropathic pain in mice downstream of monocytesmacrophages and oxidative stress. Brain 139, 1361377 (2016). 31. Kim, H. K. et al. Reactive oxygen species (ROS) play a crucial function in a rat model of neuropathic discomfort. Discomfort 111, 11624 (2004). 32. Liu, T., van Rooijen, N. Tracey, D. J. Depletion of macrophages reduces axonal degeneration and hyperalgesia following nerve injury. Discomfort 86, 252 (2000). 33. Zhu, X., Fujita, M., Snyder, L. A. Okada, H. Systemic delivery of neutralizing antibody targeting CCL2 for glioma therapy. J. Neurooncol. 104, 832 (2011). 34. Perkins, N. M. Tracey, D. J. Hyperalgesia resulting from nerve injury: role of neutrophils. Neuroscience 101, 74557 (2000). 35. Hackel, D. et al. The connection of monocytes and reactive oxygen species in pain. PLoS 1 8, 2013 (2013). 36. Szolcsanyi, J., Szallasi, A., Szallasi, Z., Joo, F. Blumberg, P. M. Resiniferatoxin: an ultrapotent selective modulator of capsaicin-sensitive major afferent neurons. J. Pharmacol. Exp. Ther. 255, 923.